package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    //新增员工
    @Override
    public void save(EmployeeDTO employeeDTO) {
        //Employee是需要填写的信息的类
        Employee employee=new Employee();

        //通过工具类BeanUtils将对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        //再将剩余的信息补全到数据库
        //1.账号状态,1正常0锁定,StatusConstant设置了两个常量方便修改
        employee.setStatus(StatusConstant.ENABLE);

        //2.设置密码,默认为123456,通过DigestUtils.md5DigestAsHex进行加密(PasswordConstant.DEFAULT_PASSWORD默认值为123456)
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

        //3.设置创建时间和修改时间(AOP统一切入)
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //4.设置当前记录的创建人id和修改人id(AOP统一切入)
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    //分页查询
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //select * from employee limit 0,10

        //开始分页,将前端传回的页码和每页显示数据条数传入给插件
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        //条件查询中需要根据姓名查询
        Page<Employee> page=employeeMapper.pageQuery(employeePageQueryDTO);
        //通过调用mapper后获取到返回的数据
        long total=page.getTotal();
        List<Employee> result = page.getResult();
        return new PageResult(total,result);
    }

    //修改员工账号状态
    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);

        employeeMapper.update(employee);
    }


    //根据id回显
    @Override
    public Employee ById(long id) {
        Employee employee=employeeMapper.ById(id);
        //处理下传给前端的密码
        employee.setPassword("*****");
        return employee;
    }

    //修改员工
    @Override
    public void update(EmployeeDTO employeeDTO) {
        //Employee是需要填写的信息的类
        Employee employee=new Employee();

        //通过工具类BeanUtils将对象属性拷贝
        BeanUtils.copyProperties(employeeDTO,employee);

        //修改时间(AOP统一切入)
        //employee.setUpdateTime(LocalDateTime.now());

        //4.设置当前记录的修改人id(AOP统一切入)
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }

}
